Here's a little anecdote that shows how hard it is to get accurate data on risk. Just to keep things spicy, the "risk" involved is the likelihood of dying from a fatal heart attack during sex. It's more complicated than it seems. »1/12/14 1:00pm 1/12/14 1:00pm

People have long believed that there was a link between air pollution and an increased risk of heart attack. But a new study shows that link is negligible. Instead, there is strong evidence that the main environmental factor in heart attacks is low temperatures. Here's what this means for you. »9/01/13 10:30am 9/01/13 10:30am

Cholesterol is bad and lowering cholesterol is good. Well, at least this is what we’ve been led to believe for nearly four decades. But it’s a misconception — a big, fat stinking lie. Here’s what we’re learning about cholesterol — and what it really means to your health. »8/05/13 11:15am 8/05/13 11:15am

When in a cardiac emergency, your body turns your own worst fears against you. The more acutely you feel fear, the worse your heart problem gets. It's like the plot of IT, but without the bad special effects. »6/02/11 8:30am 6/02/11 8:30am